headlamps not working

[lucas83]

Hey guys!

I have a 81 Spider project on the go at the moment and I have been struggling with the low beams not functioning. High beams work. So Ive got to the point of checking the feed wiring to the back of the fuse panel for the low beam fuses, its a grey/red wire located in Pin #5 but feeds both low beam fuses and there is NOT power to that connector. I removed the headlamp switch on the dash and figured out that the green wire on the switch is the control for the low beams. Just to test I used a jumper wire from that green wire to the grey/red wire. Headlamps worked. So I've confirmed that its a wiring issue. Now, This car has a brutal aftermarket alarm system installed and was not installed very nicely there's splices and connectors, wiring EVERYWHERE. Super scary sight. My idea is to try to chase the grey/red wire back to where its possibly cut into or jumped into the alarm harness and put it back to stock.

Was wondering if anybody has a decent wiring diagram for me to use as some sort of map to see where the grey/red wire goes before I pull have the dash apart.

Thanks in advance.

Lucas

[spider2081]

One of the best auto electrical publications is actually a Fiat electrical publication. It is available on the Mirafiori.com site for members and the membership is free you just need to register to have access to their library.
the publication is titled " Spider 2000 Electrical Diagnostic Manual 1980-1981"
Sounds like the hi/lo beam switch may be defective
Hope this helps

[lucas83]

Thank you @spider2081 , I will look into this. I believe your correct in the hi beam switch failure.

Thanks again!